Dred james jones



(No Model.)

J. 8v A. J. JONES.-

GRINDING MILL.

No. 422,223. Patented Peb. 25, 1890.

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` UNITED STATES PATENT OFFICE.

JAMES JONES AND ALDRED J. JONES, OF THOROLD, ONTARIO, OANADA.

GRlNDlNG-MILL.

SPECIFICATION forming part of Letters Patent N o. 422,223, datedFebruary 25, 1890.

Application filed August 8, 1889. Serial No. 320,115. (No model.)

To @ZZ whom it may concern- Be it known that we, J AMES J ONES and AL-DRED J AMES JONES, both mllers, and both of the town of Thorold, in thecounty of Welland, in the Province of Ontario, Canada, have jointlyinvented a certain new and useful Improvement in GrindingM ills, ofwhich the following is a specification.

The object of the invention is to design a roller grindingqnill whichwillproduce the finest grade of middlings in the shortest possible timeand with a minimum of power; and it consists, essentially, of alongitudinallygrooved roller held stationary between two revolvingrollers, one of which has longitudinal ratchet-shaped furrows cut roundits periphery, the said furrowed roller being caused to revolve, therebyacting in oonj unction with the stationarygrooved roller, and astationary grooved plate being provided to grind and regrind the wheat,separating the our and producing ahigh grade of middlings, the branbeing reground by being' carried between the stationary grooved rollerand the revolving grooved roller located on the side of the stationaryroller opposite to that occupied by the .turrowed roller, the wholebeing otherwise constructed substantially as hereinafter moreparticularly explained.

Figure l is a cross-section al elevation showing the location of ourgrinding-rolls. Fig. 2 is an enlarged perspective detail `of thestationary giindingplate.

As we do not claim anything original in the mechanism for driving thegrindingrolls, or the arrangement of hoppers, sieves, dac., whichnecessarily form a part of or operate in conjunction with. agrinding-mill, we have not deemed it necessary to illustrate theseparts, as every one familiar with the construction. of grindingmillswill, from the description read in conjunction with the accompanyingdiagram, readily understand how tov adapt our invention to almost any4kind of grindingmill.

In the drawings, A represents a grooved or corrugated roller, which isheld in suitable bearings so that it will remain stationary. Ve preferto make from twenty to thirtytwo corrugations to the inch in thisroller.

B is a roller having a series of longitudinal ratchet-shaped furrowsmade around its periphery, preferably from two to six to the inch. Thisroller B is carried in suitable bearings, and is caused to revolve inthe direction indicated by arrow by any suitable power, which is notnecessary to showin this application.

On the opposite side of the roller A We journal another roller O, andcause it to revolve in the direction indicated by arrow by any suitabledriving-power. The roller O is grooved or corrugated in a similar mannerto the roller A.

D is a grooved or corrugated plate located below the roller A.

E is a curved screen extending from the plate D beyond the junctionofthe rollers A and B.

F is a spout extending into the flour-hopper and having its top sidea'perforated, as indicated.

The frames G, in which the rollers B and O are journaled, are adjustably supported on the table H. It will be understood that each of therollers B and O is provided with tWo frames G, and one at each end ofits roller. The base of each frame G is provided with a screwed spindleI, connected to it and the frame of the machine in the ordinary mannerto allow of the easy adjustment of the frames G by merely revolving thespindles l. In this manner the rollers B and O may be readily adj ustedto suit the class of Work they are intended to perform.

In operation the grain is first admitted between the stationary roller Aand the revolving ratchetshaped furrowed roller B. After passing betweenthese rollers it falls onto the screen Eand the fine flour and middlingsfall through the perforations in the skirt into the iiourhopper locatedbelow the machine. The bran and coarser part of the grain fall down thescreen E, and passing between the roller B and the corrugated plate Dare regronnd, linally falling from screen E onto the perforated top sidea of the spout F. The iiour and middlings passing through theperforations in the spout F are conveyed into the iiour=hopper below themachine, while the bran falls off the top side a into elevators, whichconvey it back to a point Where it may fall between the ICO corrugatedroller C and the stationary corrugat-ed roller A. lt will thus be seenthat by our arrangement of rollers we obtain three reductions with onlytwo revolving rollers.

The roller A is held in such a manner that when necessary it may berevolved, so as to bring a different surface opposite to thegrinding-rolls B and C.

It will of course be understood that instead of the grooved orcorrugated rollers a roller having longitudinal ratchet-shaped furrowsmay be substituted for either or both of them.

What we claim as our invention isl. ln a grinding-mill, a revolvingroller having longitudinal ratchetshaped furrows cut around its surface,in combination with a grooved or corrugated roller A, a stationarygrooved or corrugated plate D, a perforated screen E, and a spout F,having a perforated side a, substantially as and for the purposespecified.

2. In a grinding-mill, the coinbinationof the adjustable frames, thecorrugated roller,

and the roller havingratchet-furrows carried the perforated side on theother side of the 3o plate.

Toronto, July 26, '1889.

JAMES JONES. ALDRED J. JONES.

ln presence of-h H. A. SMITH, A. B. SHAW.

